A5013727809- Nuclear and radioactivity studies
- Graphite, nuclear technology, radiation studies
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Concrete and Cement Materials Research
- Innovative concrete reinforcement materials
- Radiation Detection and Scintillator Technologies
- Radiation Therapy and Dosimetry
- Advanced Radiotherapy Techniques
- Concrete Corrosion and Durability
- Structural Behavior of Reinforced Concrete
- Radiation Dose and Imaging
- Nuclear Materials and Properties
- Radioactive contamination and transfer
- Innovations in Concrete and Construction Materials
- Recycled Aggregate Concrete Performance
- Masonry and Concrete Structural Analysis
- Radioactive element chemistry and processing
- Magnesium Oxide Properties and Applications
- Structural Analysis of Composite Materials
- Geophysical Methods and Applications
- Nuclear Issues and Defense
- Structural Load-Bearing Analysis
- Structural Engineering and Vibration Analysis
- Structural Analysis and Optimization
Wyoming Department of Education
2018-2025
University of Wyoming
2009-2025
ORCID
2021
Pacific Northwest National Laboratory
1984-2019
National Institute of Standards and Technology
1996
Lawrence Livermore National Laboratory
1996
Westinghouse Electric (United States)
1992
National Technical Information Service
1984
United States Department of Commerce
1984
Utilization of nanomaterials in high-volume fly ash (HVFA) concrete as a means improving concrete's properties is feasible. This paper presents experimental data to evaluate the modification effects nano-SiO2 (NS) on early compressive strength and hydration HVFA concrete. To this end, mixture design method was used experimentally investigate development NS-incorporated For better understanding process, several important characteristics selected cement pastes were analyzed for kinetics, phase...
Engineered masonry, namely reinforced and confined has been widely used for housing construction in Chile over the last few decades. Most one- two-story single-family masonry dwellings did not experience any damage due to 27 February 2010 Maule earthquake, with exception of a pre-1970 vintage, which suffered moderate damage. A similar statement can be made three- four-story buildings: large majority buildings remained undamaged. However, several partially extensive damage, two three-story...
Abstract Using recycled concrete aggregate (RCA) as a replacement for natural in new is promising way to increase the overall sustainability of concrete. This has been hindered, however, by general perception that RCA sub-standard material because lack technical guidance, specifically related long-term durability, on incorporating into The goal this research was determine whether current testing methods (namely, ASTM C1260) assessing susceptibility alkali-silica reactivity could be used...
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Abstract Tensile strength of concrete or masonry is a fundamental material characteristic used to predict crack formation. ASTM C 496 and 1006 are specifically designed determine the splitting tensile cylinders units, respectively. Finite element studies for above tests were completed with maximum compared theoretical value in corresponding equations. The objectives this paper as follows: (1) evaluate current test methods using finite analysis; (2) assemblages through modifying an existing...
Abstract Determining long-term behavior of bonded CFRP systems requires developing an accelerated aging test method for applications. This paper examines the development methodology and specimen both flexure direct tension materials using a submerged in water bath subject to elevated temperature. Test results three commercial are presented. A discussion is included developmental effort.
The objectives of this study were to evaluate the capacity thin-autoclaved aerated concrete (AAC) panels used as an external cladding system using either timber or cold-formed steel framing a backup and develop predictive models. Both out-of-plane in-plane loads applied wall segments. Out-of-plane pressure testing was completed on 12 specimens vacuum test setup load walls. primary variable type system, wood steel. Strong correlation achieved for based applying one-way slab theory tested...
Abstract The state of Wyoming alone has 13.1 million square feet bridge deck, and evaluation those decks become an important part the Department Transportation’s (WYDOT) management repairs. authors believe that development advancement nondestructive methods over past 25 years may provide a more efficient, standardized, accurate method for evaluating deck conditions compared with current practices. A study was performed on three in Wyoming: First Street Bridge Casper, Douglas I-25 Bridge,...
The limiting quantity in radiation protection for whole body exposures the United States is currently based on effective dose equivalent (EDE). Because EDE computed from individual organ equivalents, it essentially impossible to measure directly. However, calculated and resulting EDE, can be correlated response of a detector located at one or more locations human body. Until now, calculations corresponding equivalents have been tabulated relatively few standard irradiation geometries...
ABSTRACT The alkali–silica reaction (ASR) occurs in concrete that contains silica a reactive aggregate, sufficient alkalis, and moisture. Although the most widely accepted tests for evaluating ASR potential are prism test (CPT) accelerated mortar bar test, each has limitations. Because of need to mixes within short period time, an autoclave method (autoclaved CPT [ACPT]) was investigated using samples boosted 3.0 % total alkali content subjected exposure temperature 271°F (133°C) with...
ABSTRACT Reusing concrete from demolition work has the potential to produce sustainable by replacing coarse aggregate with recycled (RCA). A concern is alkali-silica reaction in parent source of concrete. This study presents experimental results that indicate using RCA nonreactive natural aggregates applications beyond base fill roads decrease reactivity For example, expansions substituted for were reduced less than half expansion when tested prism test (CPT). Furthermore, an autoclave...
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